black hat vs malfeasant

black hat

noun
  • A malicious hacker, one who violates computer security out of maliciousness or for personal gain. 

  • A villain or bad guy in a story, especially in a Western (a film or other work of the Western genre). 

  • A Haredi Jew; a member of an ultra-Orthodox Jewish community. 

malfeasant

noun
  • Someone guilty of such conduct; a malefactor. 

adj
  • Of or relating to malfeasance or misconduct. 

How often have the words black hat and malfeasant occurred in a corpus of books? (source: Google Ngram Viewer )